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Help CenterCustom EV Water Pump Plastic Molding, Insert Molding With Brass Insert, 180°C Heat Resistance
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Changzhou Hongxinyutai Precision Mold Co., Ltd. has been a trusted manufacturer of precision injection molded parts since 2017. With a factory spanning 1,000-3,000 square meters and a dedicated team of 51-100 employees, we specialize in producing custom EV water pump plastic molding components that meet the rigorous demands of the electric vehicle industry. Our insert molding with brass insert technology delivers robust, leak-proof, and heat-resistant parts capable of withstanding up to 180°C continuous operation. Backed by TS16969 certification, our products are exported to markets across North America, South America, Europe, Asia, and Oceania, ensuring global reliability and performance.
Our Custom EV Water Pump Plastic Molding is engineered to provide superior thermal management in electric vehicle cooling systems. The integration of precision brass inserts during the molding process eliminates secondary assembly steps, reducing cost and improving structural integrity. The high-temperature plastic material (such as PPS or PPA) ensures dimensional stability and resistance to coolant chemicals, making it an ideal choice for modern EV powertrains.
Key Features & Technical Specifications
- High-Temperature Resistance: Designed for continuous operation at 180°C, with peak tolerance up to 200°C for short durations.
- Brass Insert Precision: Custom-machined brass inserts with thread sizes from M3 to M12, offering excellent torque retention and corrosion resistance.
- Insert Molding Process: Plastic is molded directly around the brass insert, creating a permanent bond that prevents loosening under vibration and thermal cycling.
- Customizable Geometry: Complex shapes, internal channels, and mounting features can be incorporated to match specific pump designs.
- Dimensional Accuracy: Tolerances as tight as ±0.05mm ensure perfect fit with mating components.
- Chemical Compatibility: The selected plastic resists ethylene glycol, coolants, oils, and other automotive fluids.
- TS16969 Certified Quality: Our production line follows strict automotive quality standards, with full traceability and process control.
| Parameter | Specification |
| Material | PPS, PPA, or other high-temp thermoplastics (customizable) |
| Insert Material | Brass (C36000 or equivalent) |
| Continuous Operating Temp | 180°C |
| Peak Temperature | 200°C (short term) |
| Thread Size Range | M3 – M12 (custom threads available) |
| Pull-out Force (M6 insert) | ≥500 N |
| Surface Finish | SPI A-2 or better (custom texture) |
| Lead Time | 25-35 days for mold making; 15-20 days for production |
The insert molding technique offers significant advantages over traditional press-fit or threaded inserts. By encapsulating the brass insert within the plastic, we eliminate the risk of insert pull-out or rotation during assembly and use. This is especially critical for EV water pumps, where vibration and thermal expansion are common. Our mold design ensures that the plastic flows evenly around the insert, creating a mechanical interlock and a hermetic seal that prevents coolant leakage.
We also offer customization options for insert geometry, including knurled, hex, or flanged shapes to enhance torque resistance. The brass material can be plated or unplated based on environmental requirements. For higher temperature applications, alternative insert materials like stainless steel or aluminum are available upon request.
Customer Benefits
- Reduced Assembly Costs: Inserts are molded in place, eliminating secondary insertion operations.
- Enhanced Reliability: No loose inserts, no thread stripping, and consistent pull-out strength.
- Design Flexibility: Complex geometries and multiple insert positions can be accommodated in a single shot.
- Weight Reduction: Plastic housing is lighter than metal alternatives, improving EV efficiency.
- Global Compliance: Our TS16969 system ensures adherence to automotive quality standards, making parts suitable for Tier 1 suppliers.
As a manufacturer with 7+ years of experience in precision mold making, we have delivered solutions for EV water pump applications to customers in over 15 countries. Our factory’s 51-100 skilled workers operate advanced injection molding machines (50-500 ton) and maintain strict quality control from raw material incoming inspection to final testing. We provide free DFM (Design for Manufacturing) analysis to optimize your part design for cost and performance.
We are confident that our Custom EV Water Pump Plastic Molding with Brass Insert will meet your most demanding requirements. The combination of 180°C heat resistance, precision insert molding, and TS16969 certification makes this product a reliable choice for the next generation of electric vehicles. Contact us today to discuss your specifications, request a quotation, or arrange a sample evaluation. Our team is ready to support your project from prototype to mass production.
Frequently Asked Questions (FAQ)
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Q: What is the minimum order quantity (MOQ) for this custom molding?
A: Our MOQ for new molds is 1,000 pieces, with production runs of 5,000+ pieces recommended for optimal pricing. Smaller quantities are possible for sampling. -
Q: Can you provide a sample before mass production?
A: Yes, we offer prototype samples using aluminum molds or 3D-printed inserts for evaluation. Production-level samples are available after mold validation. -
Q: What plastic materials are suitable for 180°C continuous use?
A: We recommend PPS (Ryton, Fortron) or PPA (Amodel, Zytel HTN) for this temperature range. Both offer excellent dimensional stability and chemical resistance. -
Q: How do you ensure the brass insert does not loosen during molding?
A: Our mold design features precision core pins that hold the insert in place. The plastic shrinks around the insert’s knurled or undercut features, creating a mechanical lock. -
Q: What is the typical lead time for a new mold?
A: Mold fabrication takes 25-35 days, including design approval, sample molding, and testing. Production lead time is 15-20 days after mold approval. -
Q: Do you offer any certifications for the product?
A: Yes, we are TS16969 certified (automotive quality management system). Our factory also follows ISO 9001 procedures, though this certification is not separately listed. -
Q: Can you handle complex multi-insert parts?
A: Absolutely. Our insert molding capabilities allow for multiple inserts of different sizes and materials in a single cavity. We have experience with 4+ inserts per part. -
Q: What ports do you ship from?
A: We ship from Jiangsu, Shanghai, and Shenzhen ports in China, covering all major international destinations.
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